After the paper of Guarnieri and Vendramin [1]}, several results involving left braces were extend to skew left braces. Indeed, in [2]} Acri and Bonatto classified skew left braces of size \(pq\) , where \(p,q\)  are prime number, while in [3]} N. Zenouz extended Bachiller's classification of left braces having size \(p^3\)  to skew left braces. Among the skew left braces of size \(p^2q\) , in [4]} Acri and Bonatto completely classified skew left braces \((B,+,\circ )\)  of size \(p^2q\)  and with \((B,+)\)  abelian, while in [5]} a complete classification of the ones having cyclic \(p\) -Sylow subgroup was provided. Skew left braces of size \(2p^2\)  were completely classified in [6]}. Some people also investigated infinite skew left braces: for example, in  Stefanello and Trappeiners extended the result of Cedó, Smocktunowicz and Vendramin [7]} giving a classification of skew left braces \((B,+,\circ )\)  having \((B,\circ )\)  as an infinite cyclic group. Several other papers investigate the relation between the operations \(+\)  and \(\circ \)  of a skew left braces (see for example [8]}, [9]}, [10]},  and related references).
